Ball cock device



Oct. 20, 1942. B. svlRsKY BALL COCK DEVICE Filed Oct. 27, 1941 INVENTOR Ulf TTOP/VEX Patented Oct. 20, 1942 nemusviniq, Glendale, cnn. Application October 27, 1941, Serial No. 416,

Claims. (Cl. 137-14) This invention relates to improvements in ball cock devices.

Among the objects of the invention are:l To provide an improved arrangement of a compressible gasket in relation to the movable closure member of the valve and to the seat therefor,

so that said gasket will be protected from being worn by the friction of the vertical'streams of liquid, the abrasive action oi' which is often augmented by sandy particles therein; to provide a simplified and more positively operating means to prevent al1 anti-syphoning; to provide means to eii'ectually safeguard against an objectionable or injurious discharge of water through the valve structure in case the cotter pin of the oat arm breaks; and to provide a minimum number of parts in an assembly capable of performing the required functions.

A further obect o f the invention is to provide for a ball cock structure a valve element having a lip portion which is capable of flexion in opposite directions from an intermediate position, in response to a vacuum pull or a water pressure push thereby contributingto the more eilicient performance of the desired anti-syphon and antisplash functions.

A more specific object is to provide a valve strucl ture wherein avitreous or vitreous like closure member may be more advantageously employed by reason of being non-corrosive, smooth and incapable of picking up particles such as sand and grit tending to improperly seat it.

Still other objects, advantages and features' of invention will hereinafter appear.

Referring to the accompanying drawing, which illustrates what is at present deemed to be a preferred embodiment of the invention;

Fig. 1 is a view of the device partly in side elevation and partly in vertical mid-section, parts being, broken away in order to contract the view, the valve controlling the inlet being shown closed, and the anti-syphon valve being shown open.

Fig. 2 is a transverse section taken on line 2-2 of Fig. 1.

Fig. 3 is a reproduction, mostly in vertical midsection of the parts shown in the upper part of Fig. 1, theinlet valve being open, and the antisyphon Valve being closed.

Referring in detail to the drawing, the invention is embodied in a general ball-cock assembly I including the float rod 4 fulcrumed on the cotter pin 5, and the refill tube 8. The circular casing 1 of the ball cock has within it a current directing'chamber l axially of which extends the glassi plunger or valve closure member 9 the upper "l, and

anti-syphon valve, of iexion in opposite directions from an intermediate position, in response to a vacuum pull or a water premura push. Below its channel i4 the lower end portion of the valve body 9, by preference and as shown. is slightly greater in diame ter than it is above said channel. The annular body I5, desirably made of rubber, has a hub portion II which closely iits around said diametrically reduced portion of the plunger 9 and'this aids in keeping the rubber member I5 in place within the channel I4.

The ball cock casing 1 has a large central circular opening in its upper side winch is `surrounded by an internally screwthreaded flange 2l into which screws the lower end of the cap structure 22, which has around it a stop shoulder 23. Said cap structure desirably has integral therewith the mounting lugs 24 for the cotter pin l. Through the top of said cap structure is a central e surrounded by a depending flange 2l within which slldably lits and above which projects the upper portion of the plunger lateral vanti-syphon holes 26 passing through said cap are providedat a higher level than the lower end of said flange 25. When the cap structure 22 is fully screwed down the lower end thereof is properly positioned to form a cove seat 22a for the nn valve 'i6 when the plunger 9 is at the upperlimit of its travel, or when the n portion of the valve is ilexed into a contactable relation therewith, thereby at such times separating the chamber I of the casing 1 from the chamber 2i within the cap structure.

Through the lower wall of the casing 1 leads a central e 3|, the upper face of this wall grooved to receive a valve seat which cooperates the lower end surface of the valve body or plunger 9', including its already mentioned lip il. Said gasket has through it a central passage Il. 'I'he lower base of said gasketis ilat and its upper side is furnished with a frusta-conical rise I4, the lower end ofthe valve body having a frusta-conico! recessllatoiltsaidrise.

From the lower side of the casing 1 projects a central mounting nange Il which iits over the upper section Il, of the stand pipe and is shown secured thereto in any suitable manner as for example by. welding 21. The lower stand pipe section It is shown provided with a conventional fitting 3l where it passes through the tank bottom Il The ball cock casing 'I has a radial outnow passage 4I leading from its upper portion, this passage communicating with a nipple 4I which forms the upper hush tube section, of which the lower hush tube section I1 forms a downward continuation. From the upper part of said nipple 4G. at the side thereof opposite to the passage projects an outlet nipple 4I over which is ntted the adjacent end of the refill tube I. Said hush tube Il and refill tube l being in the present instance preferably constructed of rubber tubing. The operation of the device will be for the most part readily understood from the foregoing description. but a few features thereof may require brief additional mention.

As the rod I lowers and the part Il rises after a flushing operation the plunger 9 moves vertically upward under the urge of the water from the standpipe 36 entering the opening 2| into the ball cock casing 1. Since the rising of the plunger 9 is no faster than the lowering of the rod 4, there is a short lapse of time in which the anti-syphon valve i6 has to move from the full line position shown in Fig. 1 to that shown in Fig. 3. During this short lapse of time the water entering the ball cock chamber would pass by the anti-syphon valve and out through the anti-syphon holes 26 were it not for the fact that as soon as the water under pressure enters the ball cock chamber 8 the valve I6 is immediately flexed as shown in dotted lines i'n Fig. 1, thus causing the periphery of thevalve to seat within the cove seat 22a incident to .the ilat vseating thereof as shown in full lines in Fig. 3, by which time the tank has been emptied enough to permit the full uptravel of the plunger, which will then remain in such position until the tank has filled suiliciently to cause the oat rod to rise and actuate the plunger in the reverse direction.

During the time the valve Il occupies the position shown in full lines in Fig. 3, if for any' reason a vacuum should occur inthe pipe line 36, the valve it would flex downwardly as shown in dotted lines in Fig. 3, on account of air passing through the anti-syphon holes 26 causing an anti-syphoning condition thereby preventing water in the tank from being drawn into 'the main water supply line.

During the filling of the tank the plunger 2 is gradually pressed downwardly causing the centrai part of the valve i8 to be carried therealong but permitting the periphery thereof to prevent flow therepast in view of the dotted line seating as shown in Fig. l until the water pressure in the chamber becomes nil permitting the periphery of said valve to assume its normal position as shown in full lines.

VDuring the final` seating of the plunger S against its resilient seat in the base of the valve chamber the water acts against the smooth frusto-conical recess on the underside of the plunger, such smooth surface preventing the adhesion of sand and grit particles which might clog within the water passage and prevent proper seating of the plunger, as would be the case if a pitted or worn washer occupied such recess, A,

as has previously resulted from the custom of otherwise constructing such valve seats or washers.

Since the plunger is made of glass, it is non-` corrosive and will not pit when subjected to sulphuric water, as would brass or other metals. The elimination of these pits also eliminates the v chance of lodgement of sand and grit therein,

which would cause an improper seating of the plunger against its valve seat.

If for any reason the cotter pin 5 should become displaced the movement of the plunger upwardly would cause the valve I6 to flex in' a cup-shaped manner wherein it would close the annular passage around the plunger 9 and prevent an anti-splashing through the anti-syphon holes. such uptravel being limited to the abutment of the flange of the valve against the guide 2i, or in case the valve IS should become displaced the uptravel of the plunger-.would be limited to the abutment of the enlarged portion I'la of the plunger with the guide 25.

The term anti-splash refers to a condition 'wherein the structure prevents water from passing` through the holes 28 and splashing against the walls of the tank 4l.

The term antl-syphon refers to a condition wherein the structure prevents water from being drawn into the main line when a 'vacuum occurs therein, by the employment of the antisyphon holes 26 permitting air to enter through them and break the seal of the valve fin I6 with its seat before such vacuum would be of such magnitude as to drawthe water from the tank.

It should be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents which fall within the scopefof the subject matter claimed.

What is claimed is:

1. In a ball cock valve structure, a valve casing having a bottom port, there being a valve seat which surrounds said port, a plunger mounted within said casing for vertical reciprocation to and from a position wherein it contacts with said valve seat, there being within said casing an annular chamber around the lower end yof said plunger when the latter is seated, an annular anti-syphon valve body encircling said plunger and secured thereto in an upwardly spaced relation to its lower end, said valve body carrying a circumferential horizontal iin, the upper .portion of said casing being diametrlcally contracted, thereby forming an annular valve seat with which said iin contacts when the plunger is at the upper limit of'its travel, there being above the latter valve seat an upward tubular extension of said casing which forms an annular passage around said plunger, said extension having a top wail through which `is a central passage, said passage being surrounded by a depending tubular flange of saidwail, said casing extension having antisyphon outlets above the lower end of said ange and the aforesaid iin of the anti-syphon valve being suiiiciently flexible so that, in case said plunger is forced upwardly beyond the normal limit said fin will close the annular passage within said casing extension and will prevent outflow of water through said anti-syphon openings.

2. In a ball cock device, a ball cock chamber having a water inlet and outlet, a plunger guide chamber provided with anti-syphon holes in its\ exterior wall portion and forming an upward continuation of said ball cock chamber, a resilient gasket provided with a truste-conical rise and mounted in the base of said ball cock chamber, there being alined openings through said rise and the base wall of said chamber forming said inlet, a plunger slidably mounted in the guide portion of said plunger guide chamber, said plunger having its lower end projecting into said ball cock chamber and provided on its under side with a frusto-conical recess which occupies at times a seat on the frusto-conical portion of said gasket, said upward continuation of said ball cock chamber being constructed and arranged to form at its juncture with the lower part of said ball cock chamber an annular recess, and a valve element mounted upon the end oi said plunger which projects into said ball cock chamber, said valve element having a lip seatable across said recess when said plunger is at the upward limit of its travel and capable of flexion in opposite directions from an intermediate position to open communication between said chambers when said plunger is at the upward limit of its travel by vacuum pull and to lfici: upwardly to a position to close communication between said chambers when said plunger is at a lower level than its upward limit, the latter flexion being caused by the water inowing through' said inlet.

3. In a ball cock device, a ball cock chamber having a water inlet and outlet, a plunger guide chamber provided with anti-syphon holes in its exterior wall portion and forming an upward continuation of said ball cock chamber, said upward continuation of said ball cock chamber being constructed and arranged to form at its juncture with the lower part of said ball cock chamber `an annular recess, a resilient gasket mounted in the base of said ball cock chamber, there being alined holes through said gasket and the base wall of said ball cock chamber forming said inlet, a plunger slidably mounted in the guide portion of said plunger guide chamber, said plunger having its lower end projecting into said ball cock chamber and occupying at times a seat upon said gasket to close said inlet, and a valve element having a body portion mounted in a recess upon the end of said plunger which projects past said annular recess into said ball cock chamber, said valve element having an annular diaphragm seatable across said recess when said plunger is at the upward limit of its travel and capable of ilexion in opposite directions from an intermediate position to open and close communication between said chambers.

4. The subject matter of claim 3V and said outlet being located below the lower limit of travel of the diaphragm of said valve element.

5. The subject matter vof claiml 3 and, said diphragm at the lower limit of travel of said plunger being capable of ilexion into an abuttin relation with said annular recess.

BENNETT SVIRSKY. 

